Commercial certificate woes

So upgrading from 5.0.1 to 5.0.10 wiped my commercial certs.
I reissued the CSR using All Servers and got new certs from godaddy. I have tried EVERYTHING and nothing is working. I have read all the treads about using ALL servers (which I am) and using different combinations of certs that godaddy sends you (I have) and I still get the error

Your certificate was not installed due to the error : system failure: XXXXX ERROR: Unmatching certificate (/opt/zimbra/mailboxd/webapps/zimbraAdmin/tmp/current.crt) and private key (/opt/zimbra/mailboxd/webapps/zimbraAdmin/tmp/current_comm.key) pair.

I have read that people tried the command line method, but I have too and most of them are for 4.x versions. PLEASE HELP IF YOU CAN

I know you say you've tried everything, but in my experience (and I have been on this forum for a little while) the search engine rarely helps me find just that part of "everything" that I'm actually looking for, even if I'm the one who wrote it. . .. . .so please don't take this as condescending which I'm not trying to be!

But have you tried the steps I described here? Admittedly this was on an earlier 5.x.x release but it worked for me and seems to have worked for some others, and I did see the same error you have described before I did it exactly this way.

Do let us know in as much excruciating detail as possible if you still have problems. . .